usb-device-manager: Do not hide devices on client if USB redirection disabled
usb-device-manager: Do not hide devices on client if USB redirection disabled

https://bugzilla.redhat.com/show_bug.cgi?id=1431137
When auto sharing of USB devices is enabled in remote-viewer's configuration
file, Windows spice client hides connected USB devices on client machine even
if USB redirection is disabled by --spice-disable-usbredir.

Signed-off-by: Yuri Benditovich <9668326cb042de5d91fd7679dac7ca5ea402812c@daynix.com>
Acked-by: Christophe Fergeau <05b95054a663c388a4e33d95828cb30f0370f8ef@redhat.com>

fgouget/spice-gtk,fgouget/spice-gtk,flexVDI/spice-gtk,flexVDI/spice-gtk,fgouget/spice-gtk